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We are seeking an independent backend developer (no agencies) to work on a project basis for a cross-platform mobile app built using Ionic Framework. The app will include a calorie counter and AI-powered tools (OpenAI or other LLM integrations) for nutrition and wellness tracking. You will work directly with our in-house frontend developer and product lead to create a secure, scalable backend that powers the app’s features. Scope of Work Backend Architecture: Design, develop, and deploy backend systems for user accounts, calorie tracking, data storage, and analytics. API Development: Build secure RESTful or GraphQL APIs for seamless integration with the Ionic frontend. AI Integration: Implement AI/LLM features such as nutrition chatbots, food recognition, and personalized suggestions. Database & Authentication: Set up and manage databases, user authentication, and secure data handling. Cloud Deployment: Deploy and maintain backend on AWS, GCP, or Azure environments. Required Skills Strong backend development skills with Node.js, Django, Laravel, or similar frameworks. Proven experience building APIs for Ionic or other mobile app frameworks. Database expertise (MySQL, PostgreSQL, MongoDB, etc.). Familiarity with AI API integrations (OpenAI, Anthropic, or similar). Experience with cloud hosting, containerization (Docker), and backend security best practices. Nice to Have Experience with health, fitness, or nutrition-related apps. Knowledge of image recognition APIs for food logging. Understanding of data privacy requirements for wellness/health applications. Proposal Submission Only Proposals that provide the following information will receive a response 1. Please provide a link to your GitHub/code portfolio or past development projects. If part of a team, clarify your individual contribution. (Mandatory) 2. Please provide a link to past work you have done 3. Please provide a link to your professional background If shortlisted you would be assigned a small project first before we offer long term offers. Thank you
Project ID: 39692464
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Active 9 mos ago
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125 freelancers are bidding on average $2,116 USD for this job

I bring over 10 years of expertise in web and mobile development, specializing in backend development with Node.js, Django, and Laravel, along with experience in API development for Ionic and other frameworks. I understand your need for a secure, scalable backend to power your cross-platform mobile app with AI integrations for nutrition tracking. In the past, I have successfully delivered projects in the health, fitness, and nutrition domains, aligning with your app's focus. My experience in database management, AI integrations, and cloud deployment ensures a comprehensive solution for your requirements. If you're looking for a dedicated individual with a proven track record in backend development, I am confident in my ability to deliver results for your project. Feel free to review my GitHub portfolio and past work to see how my skills align with your needs. I am excited about the opportunity to collaborate on this project and look forward to discussing further details with you. Let's connect and make your app a success! Thank you.
$2,400 USD in 30 days
8.1
8.1

Hello, I am really excited about the opportunity to collaborate with you on this project! It aligns perfectly with my skill set and experience, and I’m confident I can contribute meaningfully to your vision. I genuinely enjoy working on projects like this, and I believe we can create something both functional and visually engaging. Please feel free to check out my profile to learn more about my past work and client feedback. I’d love to connect and discuss the project details further your goals, expectations, and any specific features or ideas you have in mind. The more I understand your vision, the better I can bring it to life. I am ready to get started right away and will put my full energy and focus into delivering quality results on time. My goal is not just to complete the project, but to exceed your expectations and build a long-term working relationship. Looking forward to hearing from you soon! With regards! Divya
$3,000 USD in 40 days
6.7
6.7

Hello, I'm excited about the opportunity to work as your backend developer for the Ionic mobile app focused on nutrition and wellness. With a strong background in backend development, particularly with Node.js and API creation, I'm confident I can build a robust and secure backend that meets your needs. I understand the importance of seamless integration with the frontend and can effectively collaborate with your in-house team to ensure our systems align perfectly. I have experience in AI integrations, which will be crucial for implementing features like nutrition chatbots and food recognition. My familiarity with cloud deployments also allows for efficient scaling and maintenance of backend services. I look forward to turning your innovative ideas into reality! Could you clarify your preferred AI platform for the integration with the app? Thanks, Shamshad
$3,000 USD in 25 days
6.6
6.6

Hello Team O., I have read the project details and understood the overall requirement. I am Abdul, a seasoned Mobile App Developer with expertise in Android, Django, Node.js, Laravel, AngularJS, Ionic Framework, Backend Development, Database Management, and API Development. I have successfully delivered numerous projects in this domain. For this project, I propose to design and deploy a secure, scalable backend system for your Ionic mobile app with AI integration. I will focus on backend architecture, API development, AI integration, database management, authentication, and cloud deployment. You can view my portfolio here: https://www.freelancer.com/u/mannanmaan1425 Please ping me back so we can discuss the project further. Best regards, Abdul
$1,500 USD in 4 days
6.2
6.2

Our clients usually achieve a 40% reduction in development time after we streamline backend systems for mobile apps. As a specialized AI/ML engineer and full-stack developer, I can help you design and build a secure, scalable backend for your Ionic mobile app. My approach includes: - Creating robust backend architecture for user accounts and analytics. - Developing secure RESTful APIs for seamless integration. - Implementing AI features for nutrition tracking and personalized suggestions. - Managing databases and user authentication with best security practices. - Deploying solutions on cloud platforms like AWS or Azure. I recently helped a health app reduce their user onboarding time by 30% with an optimized backend and AI integration. For immediate value, consider starting with a clear data flow diagram for your backend. This can clarify requirements and guide the development process. Let me know if you want a quick plan or have any questions.
$2,700 USD in 15 days
6.4
6.4

Hello Team O., I reviewed your project, "Freelance Backend Developer (Ionic Mobile App + AI Integration) – Individuals Only," and it’s an excellent match for my expertise. With 500+ completed projects and a 4.9⭐ Top-Rated profile, I deliver high-performance websites, custom applications, and creative digital solutions that are secure, fast, and visually outstanding. My skill set includes ✅ Web Development: WordPress, Shopify, WooCommerce, Laravel, PHP, React.js, Vue.js, Python ✅ Databases: MongoDB, MySQL, PostgreSQL ✅ E-commerce: Store setup, product optimization, custom checkout flows, payment gateways (PayPal, Stripe, Square) ✅ UI/UX Design: Pixel-perfect, responsive layouts, Figma prototypes, branding assets ✅ SEO & Marketing: On-page SEO, technical optimization, speed enhancement ✅ Integrations: APIs, CRMs, analytics, automation tools ✅ Maintenance: Bug fixing, security hardening, backups, and ongoing support Why work with me: ✔️ 95% completion rate 400+ 5-star reviews ✔️ 1-month free support after delivery ✔️ FREE basic SEO & security setup ✔️ US time zone availability for real-time collaboration If you’d like, I can create a quick tailored action plan for your project so you know exactly how I’ll get it done—before we even start. Let’s make your project a success. Kausar Parveen Multimedia Graphic Designer & Full-Stack Developer Your Partner in Digital Excellence
$1,500 USD in 10 days
5.9
5.9

Dear Client, We are N&T Negocios y Tecnologias s.r.l., an IT company with over 20 years of experience in developing web, mobile, blockchain, and AI projects. We have a team of skilled professionals who are dedicated to providing innovative and high-quality solutions to our clients. For your project titled "Freelance Backend Developer (Ionic Mobile App + AI Integration) – Individuals Only", we propose the following solutions: 1. Backend Architecture: Design, develop, and deploy scalable backend systems for user accounts, calorie tracking, data storage, and analytics. 2. API Development: Build secure RESTful or GraphQL APIs for seamless integration with the Ionic frontend. 3. AI Integration: Implement AI/LLM features such as nutrition chatbots, food recognition, and personalized suggestions. 4. Database & Authentication: Set up and manage databases, user authentication, and secure data handling. 5. Cloud Deployment: Deploy and maintain the backend on AWS, GCP, or Azure environments. We believe that the best architecture and technology to use for this project would include Node.js for backend development, MySQL for database management, and integration of AI APIs such as OpenAI for nutrition and wellness tracking. We are confident that with our expertise and experience, we can deliver a high-quality solution that meets your requirements. We look forward to your response and the opportunity to collaborate on this project. Thank you for considering our proposal. Best regards, N&T Negocios y Tecnologias s.r.l.
$3,000 USD in 45 days
5.5
5.5

Hello, I once faced a tough challenge integrating AI chatbots with a calorie tracking app, but I solved it by optimizing the API for speed and reliability. I understand you need a secure, scalable backend for your Ionic app's user accounts and analytics. I'm experienced with Node.js and have a solid grasp of RESTful API development. I have a background in deploying applications on AWS and integrating AI features like food recognition. My previous work includes building health-related apps, so I’m well-prepared to meet your project needs.
$2,250 USD in 7 days
5.7
5.7

This is exactly the kind of work I love doing. I specialize in creating user-friendly backend architectures and APIs for mobile apps, with experience in Node.js and database management. I've integrated AI features in nutrition and wellness apps, ensuring secure deployment on AWS. My GitHub showcases similar projects, and I always deliver high-quality work. I'm happy to offer insight even if you don’t go with me. Regards, Anne S.
$2,100 USD in 5 days
5.6
5.6

Hello there, I am excited about the opportunity to work on your innovative project integrating AI into an Ionic mobile app! I specialize in backend development with Node.js and API integration. I have experience in database management and cloud deployment. Let's craft a robust backend together! Looking forward to the possibility, John Allen
$2,000 USD in 15 days
5.4
5.4

⭐⭐⭐⭐⭐ Build a Secure Backend for Your Cross-Platform Mobile App ❇️ Hi My Friend, I hope you are doing well. I’ve reviewed your project needs and see you are looking for a backend developer for your Ionic mobile app. Look no further; Zohaib is here to help you! My team has successfully completed 50+ projects in backend development. I will design a secure and scalable backend for user accounts, calorie tracking, and AI tools, ensuring everything runs smoothly and efficiently within your budget. ➡️ Why Me? I can easily build your backend system as I have 5 years of experience in backend development with Node.js, Django, and API creation. My expertise includes database management, cloud deployment, and AI integrations, ensuring a robust solution for your app. ➡️ Let’s have a quick chat to discuss your project in detail and I can show you samples of my previous work. Looking forward to our conversation! ➡️ Skills & Experience: ✅ Node.js Development ✅ Django Framework ✅ API Development ✅ Database Management ✅ Cloud Deployment ✅ RESTful APIs ✅ GraphQL APIs ✅ AI Integration ✅ Security Best Practices ✅ User Authentication ✅ Data Storage Solutions ✅ Containerization (Docker) Waiting for your response! Best Regards, Zohaib
$1,800 USD in 2 days
5.8
5.8

✅ Hi, there. Expert Here! ✅My name is Nathaniel and I’m a seasoned Full-Stack Developer specializing in Backend Development and AI Integration with vast experience leveraging frameworks like Node.js, Django, Laravel, etc. I've successfully built APIs for multiple mobile app frameworks including Ionic. What sets me apart is my deep understanding of AI/ML and their practical application. I have prior experience with OpenAI and Anthropic, which will be invaluable for implementing sophisticated features like nutrition chatbots, food recognition, and personalized suggestions that your project requires. I also have in-depth knowledge and hands-on experience with varied databases such as MySQL, PostgreSQL, MongoDB - ensuring your data will be handled securely and efficiently. Moreover, my familiarity with cloud hosting platforms like AWS, GCP, Docker, and backend security best practices means you can trust me to deploy and maintain a robust infrastructure for your backend system. My ability to understand user needs along with my strong sense of design aesthetics will help me deliver an intuitive user experience for your wellness tracking app. In conclusion, my well-rounded skill set, extensive AI knowledge and strong backend development experience make me the perfect fit for this project. Let's take that small initial project to ascertain match collaboration!
$3,000 USD in 7 days
5.1
5.1

Hi, I can develop a secure, scalable backend with robust API and AI integrations for your Ionic-based nutrition app, ensuring seamless performance, reliable data handling, and a foundation ready for future growth. Can we discuss on chat. Regards Abhishek
$1,500 USD in 7 days
5.5
5.5

Hello Dear! I write to introduce myself. I'm Engineer Toriqul Islam. I was born and grew up in Bangladesh. I speak and write in English like native people. I am a B.S.C. Engineer of Computer Science & Engineering. I completed my graduation from Rajshahi University of Engineering & Technology ( RUET). I love to work on Web Design & Development project. Web Design & development: I am a full-stack web developer with more than 10 years of experience. My design Approach is Always Modern and simple, which attracts people towards it. I have built websites for a wide variety of industries. I have worked with a lot of companies and built astonishing websites. All Clients have good reviews about me. Client Satisfaction is my first Priority. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB What you'll get? • Fully Responsive Website on All Devices • Reusable Components • Quick response • Clean, tested and documented code • Completely met deadlines and requirements • Clear communication You are cordially welcome to discuss your project. Thank You! Best Regards, Toriqul Islam
$1,500 USD in 15 days
4.7
4.7

Greetings! I specialize in backend development with strong expertise in Node.js and Django, building secure and scalable APIs tailored for Ionic and cross-platform apps. Here's how I can help: * Architect and develop robust backend systems for user accounts, calorie tracking, and analytics * Implement AI/LLM integrations using OpenAI for nutrition chatbots and personalized wellness features * Manage databases (PostgreSQL/MySQL) with secure authentication and data privacy * Deploy and maintain backend services on AWS/GCP with Docker containerization Could you share more details on your preferred tech stack and timeline? I’d be happy to provide links to my GitHub and relevant projects.
$2,250 USD in 12 days
4.7
4.7

I am a Mobile Application developer having 7 years of work experience with the expertise of React native/Xamarin/ Flutter/ Java and Kotlin (android) /Swift and objective (iOS )/ XML and Android XML Layouts (Android)/ Interface Builder and Storyboards (iOS). I have some queries to give you accurate time and price Please ping me to get started and provide you great results. Thanks
$2,500 USD in 17 days
5.3
5.3

As an experienced Backend Developer, I fully understand the power that a well-architected and integrated backend can bring to a mobile application. Thus, I am confident in my ability to deliver what this project entails since, in addition to my expertise in Node.js, APIs and Mobile App Development, I have built several rewarding ventures using other frameworks such as Django and Laravel. This broad proficiency allows me to assess situations holistically and identify the best method to guarantee optimum performance. Moreover, I have substantial familiarity with AI-powered features similar to those requested like nutrition chatbots and food recognition. I have also worked with open-source libraries for image recognition which could come into play when creating efficient food logging functionalities. To top it off, my competent understanding of AWS DevOps ensures that any deployment on cloud-based platforms becomes an easy task. Lastly, blended with my technical mastery is a drive to create applications that are both functional and enjoyable. Whether you’re looking for seamless API integration or robust backend design & development, hiring me aligns your project with a skilled consultant who will use all the resources at their disposal to carry out a comprehensive job well before scheduled time frames. A trial project would only prove this notion further!
$2,250 USD in 7 days
5.3
5.3

Hello, I’ve reviewed the project outline and understand you’re looking for a skilled backend developer to build a robust and scalable system for your Ionic mobile app, incorporating AI-powered nutrition features. My background in developing APIs and integrating AI solutions aligns perfectly with your requirements. I’ve spent the last few years specializing in Node.js development and building APIs for mobile applications, including experience with integrating AI models – specifically with OpenAI. I’m comfortable designing database architectures (PostgreSQL, MongoDB) and setting up secure cloud deployments (AWS). I’d be happy to discuss the project in more detail and answer any questions you may have.
$2,250 USD in 5 days
4.1
4.1

Hello Team, We are Codenia Technologies LLP, with over 10 years of experience in Laravel, Android, Database Management, AngularJS, Mobile App Development, and Node.js. We have carefully reviewed the requirements for the freelance backend developer position for the Ionic Mobile App + AI Integration project. For this project, we propose to design, develop, and deploy a secure and scalable backend architecture for user accounts, calorie tracking, data storage, and analytics. Our team will build robust RESTful or GraphQL APIs for seamless integration with the Ionic frontend, implement AI/LLM features for nutrition chatbots and personalized suggestions, set up databases, manage user authentication, and ensure secure data handling. Additionally, we will deploy and maintain the backend on AWS, GCP, or Azure environments. We would like to connect with you in chat to discuss the project further. Thanks, Rupesh Kumar
$1,500 USD in 7 days
4.0
4.0

Hello Team, I am Roman Golovin, a seasoned Mobile App Developer with expertise in Android, Django, Node.js, Laravel, AngularJS, and Ionic Framework. I have carefully reviewed your project requirements and am confident in my ability to deliver a secure, scalable backend solution for your Ionic mobile app with AI integration. My approach involves designing and deploying robust backend systems, building secure APIs for seamless integration, implementing AI features, managing databases and authentication, and deploying on cloud environments like AWS, GCP, or Azure. With a strong foundation in backend development, API integration, and cloud hosting, I am well-equipped to meet your project needs effectively. I look forward to discussing this project further with you. Please start the chat so we can explore this opportunity in more detail. Regards, Roman Golovin
$2,000 USD in 7 days
3.4
3.4

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